s390 zfcp: sg fixups

Based on initial patch from Heiko Carstens <heiko.carstens@de.ibm.com>

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index 7507067351bd83b0ff00b20d890ae7a4671a5ed2..fd5d0c1570dfec4e2d56a8cdb543d0b37021a584 100644 (file)
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -559,6 +559,7 @@ zfcp_sg_list_alloc(struct zfcp_sg_list *sg_list, size_t size)
                retval = -ENOMEM;
                goto out;
        }
+       sg_init_table(sg_list->sg, sg_list->count);
 
        for (i = 0, sg = sg_list->sg; i < sg_list->count; i++, sg++) {
                sg->length = min(size, PAGE_SIZE);

diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h
index 57cac7008e0b4cbf6db25636e6921b7a958a4886..326e7ee232cb7cf4cfafd5bb41cda916b863adfc 100644 (file)
--- a/drivers/s390/scsi/zfcp_def.h
+++ b/drivers/s390/scsi/zfcp_def.h
@@ -63,7 +63,7 @@
 static inline void *
 zfcp_sg_to_address(struct scatterlist *list)
 {
-       return (void *) (page_address(list->page) + list->offset);
+       return sg_virt(list);
 }
 
 /**
@@ -74,7 +74,7 @@ zfcp_sg_to_address(struct scatterlist *list)
 static inline void
 zfcp_address_to_sg(void *address, struct scatterlist *list)
 {
-       list->page = virt_to_page(address);
+       sg_set_page(list, virt_to_page(address));
        list->offset = ((unsigned long) address) & (PAGE_SIZE - 1);
 }
 

diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index a6475a2bb8a7df713343ce615a1c10ec2442fc11..9438d0b28799838442bfa94eb5d5cc0c62bc8692 100644 (file)
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -308,13 +308,15 @@ zfcp_erp_adisc(struct zfcp_port *port)
        if (send_els == NULL)
                goto nomem;
 
-       send_els->req = kzalloc(sizeof(struct scatterlist), GFP_ATOMIC);
+       send_els->req = kmalloc(sizeof(struct scatterlist), GFP_ATOMIC);
        if (send_els->req == NULL)
                goto nomem;
+       sg_init_table(send_els->req, 1);
 
-       send_els->resp = kzalloc(sizeof(struct scatterlist), GFP_ATOMIC);
+       send_els->resp = kmalloc(sizeof(struct scatterlist), GFP_ATOMIC);
        if (send_els->resp == NULL)
                goto nomem;
+       sg_init_table(send_els->resp, 1);
 
        address = (void *) get_zeroed_page(GFP_ATOMIC);
        if (address == NULL)
@@ -363,7 +365,7 @@ zfcp_erp_adisc(struct zfcp_port *port)
        retval = -ENOMEM;
  freemem:
        if (address != NULL)
-               __free_pages(send_els->req->page, 0);
+               __free_pages(sg_page(send_els->req), 0);
        if (send_els != NULL) {
                kfree(send_els->req);
                kfree(send_els->resp);
@@ -437,7 +439,7 @@ zfcp_erp_adisc_handler(unsigned long data)
 
  out:
        zfcp_port_put(port);
-       __free_pages(send_els->req->page, 0);
+       __free_pages(sg_page(send_els->req), 0);
        kfree(send_els->req);
        kfree(send_els->resp);
        kfree(send_els);